Valve mechanism.



3 SHEETS-SHEET 1.

NO MODEL.

flaw/m2 77a Z Zia/ wihwawb I awe/1 o f r o 2 w W w W Z W E m u .a w G n. fl w m a M t m r T A P H WALTHBR. VALVE MECHANISM. APPLICATION FILED SEPT. 11, 1002.

N0 MODEL Wi ma JH. WALTHER.

VALVE MECHANISM.

- APPLICATION FILED um. 11, 1002. NO MODEL.

I III! PATENTED AUG. 30, 1904.

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UNITED ST T S Patented August 30, 1904.

PATENT OFFICE.

VALVE MECHANISM.

SPECIFICATION forming part of Letters Patent No. 769,036, dated August 30, 1904.

Application filed g To all whom it may concern.- Be it known that I, HERMAN VVALTHER, a citi- 'zen of the United States, residing at Wash and reliable in action, simple in construction,

durable in use, and well adapted to the use for which it is designed.

A further object is to produce a valve for use on gas-machines whereby an even regular flow of gas and air is continuously maintained, thereby insuring clear steady lights.

I 1- :VVith these and other objects in view the invention consists in the construction and arrangement or the parts, as will be hereinafter more fully described and 'ClfiJIIlQCl, reference being had to the accompanying drawings, in

which Figure l'is a side elevationof the valve mechanism, showing thesame applied to the air-pump and receiver of a gas-machine, the parts-being in the position they would assume at the end of the air-suction stroke, parts being broken away. for illustration. Fig. 2 is a similar view showing the parts at the beginning of a suction-stroke. Fig. 3 is a vertical sectional view of the air-pump and adjacent mechanism. Fig. 4 is an enlarged drical tank 4,0pen at its upper end and adapted to be filled nearly to the top with water.

.. 5 denotes an inverted tank or bell which is adapted to be inserted in the tank 4 in the usual manner andthe lower open end of the eptember 11, 1902. Serial No. 122,998. (No model.)

the tank 4, the upper end of which projects above the Water in said tank and the lower end of'which projects through the base of said tank to and communicates with the genwhich will be hereinafter described. I

9 denotes an air cock or valve also located in the pipe 7 between the cheek-valve 8 and the pump, and to the stem of the valve 9 is con nected one end of an operating arm or lever 10, to the opposite end of which is connected the lower end of a-vertically-disposed rod 12,

the. upper. end of which is connected to the side of the bell 501 the air-receiver, whereby when said bell is raised to its highest point the valve ,will be closed, and as the air in said bell is used and the same begins to lower the valve 9 will be opened to admit more air. The checkvalve 8 isnormally closed and opens only to admit air to the receiver when forced through the pipe 7 by action of the pump 2. I

13 denotes the stationary tank or cylinder of an air-pump, mounted upon a suitable base 14, and 15- denotes an inverted tank or bell adapted to be inserted and to reciprocate within said stationary tank.

'15 denotes a check-valve arranged in the upper end of said bell and is adapted to open and take air into said bell when -the same is being raised and to close as soon as downward movement of the bell begins.

16 denotes a vertically-disposed cylinder fixed to the side of the tank 13, and 17 denotes a piston adapted to reciprocate within said cylinder.

18 denotes a piston-rodfixed at-its lower end to said piston and connected at itsopposite end to the upper end of the bell 15.

To the lower end of the cylinder 16 is connected a water-supply pipe 16, through which water under pressure is admitted to the cylinder 16, forcing up the piston 17, which raises the bell 15. It will be understood from the foregoing that the cylinder 16 and piston 17 constitute a fluid-pressure-actuated motor which operates to raise the bell. The supply of water to the cylinder 16 is controlled by means of the valve 3, which is operated by means of a system of levers and rods now to be described.

18 denotes a tank adapted to contain water, and within said tank is arranged a float 19, to which is fixed one end of a vertically-disposed rod 20, connected at its upper end to a rod 21, arranged parallel therewith and adapted to pass downwardly through a guid e-lug fixed on the outside of the tank 18 and to extend considerable distance down the side of said tank.

21 denotes a pin or lug projecting laterally from the rod 21, and the lower end of the said rod is bent at right angles to form a hook 22.

23 denotes a laterally-projecting arm fixed to the upper end of the pump-bell and is adapted to extend across the connecting-bar of the rods and 21 and to force the same, together with the float l9, downwardly upon the lowering of said bell.

24 denotes an arm pivoted at 24' to the side of the tank 18 adjacent to the rod 21, and 24 i denotes an oflset or shoulder formed on said arm, and on the lower end of the same is formed a hook or projection 25. As illustrated, this hook or projection 25 comprises a block or footpiece having an upper horizontal or plane supporting-surface 25 and an upwardly and rearwardly beveled or inclined surface 25, thelatter acting as a contact-lip and guiding-surface to guide the pin 32 of the lever 29, hereinafter described, to said supporting-surface 25.

26 denotes a weighted lever. fixed to the arm 24 and projecting at right angles to the same.

27 denotes a rod fixed at its upper end to the upper end of the bell 15 and passing through guide-lugs on the tank 13 has formed on itslower end an elongated loop 28, through which the lever is adapted to pass.

29 denotes an angularly-shaped lever pivoted to the casing of the valve 3,0ne arm, 30, of which is extended and has projecting laterally therefrom pins 31 and 32, which are adapted to liein the path of movement of the hooks 22 and 25, formed on the ends of the rod 21 and arm 24, respectively. The opposite arm of the lever 29 projects downwardly at right angles to the arm 30 and into a slot formed in the upper side of the valvecasing adjacent to the exhaust-valve and in the path of movement of this end of the valvestem, whereby said valve-stem is actuated in one direction, as will be hereinafter more fully described. The lever 29 is guided by means of a slotted arm 33, fixed to a portion of the valve-casing.

The controlling-valve 3 consists of a horizontally-disposed casing 34, having formed therein valve-seate 35, which are adapted to be engaged by inlet and exhaust valves 36 and 37, the inlet-valve seat being arranged near the end of the casing adjacent to the water-supply pipe 38 and the exhaust-valve seat being i arranged adjacent to the exhaust-pipe 39.

The valves 36 and 37 are connected together by means of a centrally-disposed stem or rod 40, which projects through the valve-seats and slightly beyond thevalve 36. The supply-pipe 16, which communicates with the lower end of the cylinder 16, is connected at its opposite end to the valve-casing 34 about midway between the valves, and when the inlet-valve is open a direct flow of water is had between the cylinder 16 and the main supply- Assuming that the bell of the pump is at the limit of its upward stroke and just about to lower, as shown in full lines in Fig. 1, it will be noticed that when the bell reaches this position the hook 22 on the arm 21 has lifted the long arm 30 of the angular lever 29, thereby disengaging the short arm 30 of said lever from contact with the end of the valve-rod 40, allowing the pressure of the water through the supply-pipe 38 to force the inlet-valve against its seat and close the same, thereby cutting off the water-supply to the cylinder and simultaneously opening the exhaust-valve, allowing the water in the cylinder 16 and pipe 16 to run out through the discharge-pipe 39, thus permitting the piston in the cylinder 16 to descend and the pump-bell to lower. As the bell descends the rods 20, 21, and 27 will be forced down thereby, together with the float 19. The rod 27 is forced down until the upper end of the link or loop 28 engages the lever 26, at which time the pin 21on the rod 21 has reached theoflset 24 and the hook 22 has passed some distance below the pin 31, as shown in full lines in Fig. 2, and as the loop 28 strikes the lever 26 the latter will be overbalanced and drop, causing arm 24, connected thereto, to tilt from the perpendicular fullline position (shown in Fig. 1) to the inclined position, (shown in Fig. 2,) such tilting of the arm being permitted by reason of the pin 21 now being opposite the offset 24", whereby the hook 25, on the lower end of said arm 24, will be swung outwardly from beneath the .pin 32 on the long arm 30 of the lever 29,

which will then drop, and the offset 24 will engage the pin 21, thereby locking the float and the rod 21 in their lowered position. The dropping of the long arm 30 of the lever 29 causes the short arm 30 of said lever to strike the end of the valve-stem L0, thereby closing theexhaust-valve 37 and opening the inlet valve 36, which will again permit water from the service-pipe to flow into the cylinder 16 and force the piston-17 upwardly, which through the medium of the piston-rod 18 will force the pump-bell up, drawingin an addi-i tional supply of air through the check-valve As the bell risesit moves at first independently of the float (owingto "the'fact that the rod 21 is-locked from upward movement by the engagement of the pin 21 with the OE- set 24:) and carries the rod 27' upwardly with" it, which as the bell'nears the limit of its upward movement brings the lower end of the link or'loop 28 into engagement with the 'lever' 26 and'elevates said lever nearlyto its former horizontal'position, (shown in Fig.'1,) there- 'by causing said lever to tilt the arm 24 backward sufficiently to disengage the offset 24,

from the pin 21-, as shown by the dotted-line position of said lever and arm in Fig. 2.. The rod 21 then, being unrestrained from upward movement, jumps quickly upward from the fullto the'dotted line position in Fig. 2, under 7 the action of the float 19. thus bringing the hook 22 beneath the pin 31 and'raising the arm 30,. and as the bell continues to risethe float will rise also, and the rod 21' and loop 28 will complete theelevation of the long arm of the lever 29 and tilt the arm 24 back to its upright position, thereby causing the short arm- 30 of the said lever 29 torelease the valves and permit the inlet-valve to closeand the exhaust-valve to open, allowing the pump-bell to descend again. The lever29 is automat-v ically locked in this position to prevent a reverse movement'of the valves until the pumpbell has. reached the limit of its downward movement inthefollowing manner: As the arm 24'moves to an upright'position the pin 32 on the lever 29 engages and rides upward on the beveled surface 25 of the hook 25,

causing the arm to tilt in the reverse direc tion, as shown in dotted" linesin Fig. 1, in

which "direction of course the hook 25moves It will be seen, of course, that the backward or reverse tilting of the arm 24, just described, will be permitted by the freedom of upward movement of the lever 26 within the loop 28, whereby an effective locking action is insured.-

As the bell approaches the limit of its upward movement the rods 20 and 21 contact with the arm 23,- causing-- the float at such periodi to move at the same rate" of speed as the pumplbell and to come'to' a gradual stop, so'tl'iat the arm 2 L willmove easily and gradually to its fupright position.

It will be understood from the foregoing that the float is not only effective as an ele- "ment to control the operation of the valves, but also serves as a' cushioning device the tendency of which is'to resist the downward movement of thebell and prevent irregularities 'in the descent of the bell, so that the air compressed thereby will be steadily and regularly ;eXpelled therefrom and forced to the air-re-' ceiver. When the invention is used for supplying air to a carbureter employed in connection w th one or more burners, this prevents the burners from flaring when in use.

As the air 1n the recelver 1s used and the receiver-bell is lowered the valve 9 is opened "and more air from the pump-bell is forced into the receiver, agaln raising the bell and closing the'cock 9. Thus itwill be seen that the pump and valve are automatically operated and are ,entirely controlled by the consumption of the air from the receiver.

While I have'des'cribedthe invention in con nection with an air-pump of a gas-machine it is obvious that the same may be advantageously employed in other capacities.

j Various .changes in the form, proportion, 1

size, and minor details of the construction may be resorted to without departing from the principle of my invention or sacrificing any of any advantages thereof.

claim v 1. In an air-pump of'the class described, the combination of a pumping-bell mounted in a Having thusclescribedmy invention, I1

tub, a motor-barrel provided with water con 'nection, a piston mounted in said motor-barrel and connected to said bell, a valve mounted to regulate the flow of water into and out of said motor-barrel, a float arranged to be operated by the said bell, and means controlled by said float'to operate said valve, substantially as described. I r y 2. In an air-pump, the combination of a pumping-bell, of'a water-motor connected to operate said pumping-bell, a valve mounted to regulate the supply of water to said motor, a float mounted in a'ba'rrel, and arranged to be depressed by said pumping-bell, and means,

operated by said float to operate said valve,

substantially as described.

3. lnan air-pump, the combination of a pumping-bell mounted in a tub, a water-mo tor connected to operate said'bell, a valve arranged to regulate the supply of water to said" motor, "a lever constructed to operate said valve, a float, means carried-by said float to engage said lever, a lever arranged tolhold said float depressed. means-carried by said bell to operate said last-mentionedlever, sub

stantially as described.

4. In an air-pump, the combination of a 4' &

pumping-bell mounted in a tub, a water-inotor connected to operate said bell, a float mounted ina barrel, a yoke carried by said float, a pin carried by said yoke, means for depressing said float, a lever constructed to engage said pin to hold said yoke depressed, a valve mechanism mounted to be engaged and operated by said yoke to control the flow of Water to the motor, and means for operating said lever to engage and disengage said pin, substantially as described.

5. In combination with a pumping device having a movable element, a conduit for fluid under pressure, a motor mechanism including a piston and cylinder, the former connected to the movable element of the pumping device and the latter having a supply connection with said conduit, a valve mechanism operated in one direction by the pressure in the conduit, the said valve mechanism con trolling the admission of the fluid toand its exhaust from the cylinder, a lever for positively operating the valve mechanism in the opposite direction, and means controlled by the said movable element of the pumping device to govern the operation of said lever.

6. In combination With a pumping device having a movable element, a conduit for fluid under pressure, a motor mechanismincluding a piston and cylinder, the i'ormer connected to the movable element of the pumping device and the. latter having a supply connection with said conduit, a valve mechanism controlling the admission of the fluid to and its exhaust from the cylinder, said valve mechanism being actuated in one direction by the pres sure of the fluid, a lever movable in. one direction to release the valve mechanism and in the opposite direction to positively operate the same, and means controlled by the said movable element of the pumping device to govern the operation of said lever, whereby in one movement of the lever the valve mechanism will be released and allowed to be moved independently of the lever by the fluid-pressure to cut ofl the flow of fluid to the conduit, and in the other movement of the lever the valve mechanism will be positively actuated by said lever to let on the flow of fluid.

7. In combination with a fluid-pressure mechanism comprising a tank and bell, a motor comprising a cylinder and piston, the latter connected to the bell to raise it, a valve to control the flow of fluid under pressure to and from the cylinder, a gravity-lever to operate the valve in one direction, a float lowered with the bell, the latter being free to rise independently oi' the float, means operated by the rise of the float to lift the gravity-lever, means to secure the float in the lowered position, and means operated by the bell to release the float when the bell is in an elevated position.

8. The combination of an air-pump, having a bell, a float movable independently thereof, a motor to raise the bell, a valve to control the admission of fluid under pressure to the motor, and means controlled in action by the bell and-float to alternately cause the valve to be moved in reverse directions.

9. In combination with a pumping device having a movable element, a conduit for fluid under pressure, a motor operated byfluid under pressure and having a supply connection with the conduit and connection with the movable element of the pumping device to operate said element, a valve to control the supply from the conduit to the motor and to relieve pressure in the latter, said valve being adjusted in one direction by the pressure of the fluid, a lever movable in one direction to positively operate said valve and in the reverse direction to release the valve and allow it to close under fluid-pressure, means controlled by the movable element of the pumping device to move the lever in the reverse direction, a lock device to secure the lever at the limit of the last-mentioned movement, and means controlled by the movable element of the pumping device to release the lock device from said lever.

10. In combination with a conduit for fluid under pressure, a pumping device connected thereto and supplied with fluid under pressure thereby, and having a movable element, a valve mechanism, including a gravity-lever, for alternately supplying and relieving pressure through said conduit, and controlling mechanism for said lever automatically governed by the movable element of the pumping device, said controlling mechanism including a float for moving the lever in one direetion, a pivoted hook-arm havinga weighted lateral extension, said hook arm being adapted to engage said lever when raised by the float and disengage said lever to allow the 'same to drop by gravity, and a link or loop 

